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Test rig

tombueng·LuxDMX·RDM/hardware/test_rig.kicad_pcb

Top view of the Test rig PCB
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Test rig is an open source ESP32 PCB design by tombueng: a 2-layer, 198.4 × 79.5 mm board with 13 components (13 distinct parts). Filed under iot & wireless and test & measurement and dev boards & breakouts.

Open-source Art-Net / sACN (E1.31) → DMX512 gateway for ESP32 / ESP32-S3 / Ethernet. Live web UI shows all 512 channels in real time, flags console conflicts, and drives galvanically-isolated DMX. Flash from your browser, no toolchain.

KiCad project for the socketed carrier described in TESTRIGPCB.md. It holds the bench modules in female headers (sockets) so the rig is solid, no breadboard.

The board is generated from a script so the wiring is the source of truth and can't drift. buildtestrig.py places every part and assigns every net, then drops the parts in a staging grid, unplaced and unrouted on purpose so you do the layout by hand. The ratsnest shows every connection while you place, so it can't get miswired.

Parts list

13 components, 13 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MAX485 SIM (L)
J_485A_L
1
MAX485 SIM A/B (R)
J_485A_R
1
MAX485 S3 (L)
J_485B_L
1
MAX485 S3 A/B (R)
J_485B_R
1
ESP32-S3-DEVKITC DUT (J1)
J_S3A
1
ESP32-S3-DEVKITC DUT (J3)
J_S3B
1
W5500 ETHERNET
J_W5500
1
270R
BIAS 270R A->3V3
Rb1
1
270R
BIAS 270R B->GND
Rb2
1
10K
ADC-DIV 10k A->A1
Rd1
1
10K
ADC-DIV 10k A1->GND
Rd2
1
10K
ADC-DIV 10k B->A0
Rd3
1
10K
ADC-DIV 10k A0->GND
Rd4

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